The effect of feeding roughages of varying digestibility prepartum on energy status and metabolic profiles in beef cows around parturition
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The effect of feeding roughages of varying digestibility prepartum on energy status and metabolic profiles in beef cows around parturition. / Jardstedt, Mikaela; Nadeau, Elisabet; Nielsen, Mette Olaf; Nørgaard, Peder; Hessle, Anna.
I: Animals, Bind 10, Nr. 3, 496, 2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - The effect of feeding roughages of varying digestibility prepartum on energy status and metabolic profiles in beef cows around parturition
AU - Jardstedt, Mikaela
AU - Nadeau, Elisabet
AU - Nielsen, Mette Olaf
AU - Nørgaard, Peder
AU - Hessle, Anna
PY - 2020
Y1 - 2020
N2 - Resource efficient winter-feeding of mature pregnant beef cows requires knowledge of how different roughage-based feeding strategies affect cow intake and energy status. Four diets based on traditional timothy-meadow fescue silage (TM), festulolium silage plus urea (FE), reed canarygrass silage (RC) or barley straw supplemented with urea and rapeseed meal (BR), were fed ad libitum for 16 weeks prepartum to 36 Hereford cows. Postpartum, cows were fed the same diet before release on pasture. Individual data on cow intake, changes in body weight (BW), body condition score (BCS) and plasma metabolites, calf birth and weaning weights were recorded. The TM and FE diets resulted in increased BW and BCS prepartum (p < 0.001), while the RC and BR diets resulted in a catabolic state, as indicated by a loss of BCS, lower insulin levels and higher non-esterified fatty acid levels in cows fed BR (p < 0.001). There were no dietary effects on calf parameters (p > 0.29). Feeding RC or BR prepartum might be a possible alternative to traditional timothy-meadow fescue silage if cows are allowed to regain lost BCS during the grazing period. The influence on cow reproductive- and calf performance should be considered before making this management change.
AB - Resource efficient winter-feeding of mature pregnant beef cows requires knowledge of how different roughage-based feeding strategies affect cow intake and energy status. Four diets based on traditional timothy-meadow fescue silage (TM), festulolium silage plus urea (FE), reed canarygrass silage (RC) or barley straw supplemented with urea and rapeseed meal (BR), were fed ad libitum for 16 weeks prepartum to 36 Hereford cows. Postpartum, cows were fed the same diet before release on pasture. Individual data on cow intake, changes in body weight (BW), body condition score (BCS) and plasma metabolites, calf birth and weaning weights were recorded. The TM and FE diets resulted in increased BW and BCS prepartum (p < 0.001), while the RC and BR diets resulted in a catabolic state, as indicated by a loss of BCS, lower insulin levels and higher non-esterified fatty acid levels in cows fed BR (p < 0.001). There were no dietary effects on calf parameters (p > 0.29). Feeding RC or BR prepartum might be a possible alternative to traditional timothy-meadow fescue silage if cows are allowed to regain lost BCS during the grazing period. The influence on cow reproductive- and calf performance should be considered before making this management change.
KW - Beef cow
KW - Body condition score
KW - Energy status
KW - Gestation
KW - Metabolic profile
KW - Roughage
U2 - 10.3390/ani10030496
DO - 10.3390/ani10030496
M3 - Journal article
C2 - 32188129
AN - SCOPUS:85082108165
VL - 10
JO - Animals
JF - Animals
SN - 2076-2615
IS - 3
M1 - 496
ER -
ID: 240147191